baber/WOPTO huggingface dataset:
Patent GB-581139-A (GB)
Title: A process for dyeing or colouring cellulose esters or cellulose ethers
IPC: C09B1/36
Filed: 1942-10-13
Abstract: Aminoanthraquinone derivatives, which are suitable for dyeing cellulose esters or ethers, are obtained by treating an anthraquinone derivative containing at least two primary amino groups, of which at least one is bound to an anthraquinone nucleus, with an anhydride of a dicarboxylic acid, under such conditions that at least one primary amino group is acylated and at least one primary amino group remains unchanged.  The anthraquinone derivatives used as the starting-materials are preferably free from alcoholic hydroxy groups and such starting materials specified are 1 : 4- and 1 : 5-diaminoanthraquinones, 1 : 4 : 5-triaminoanthraquinone, 1 : 4 : 5 : 8- and 1 : 4 : 5 : 6-tetraaminoanthraquinones, 1-hydroxy-4 : 5 : 8-triaminoanthraquinone, mono - N - methylated 1 - hydroxy - 4 : 5 : 8 - triaminoanthraquinones, mono - N - phenylated - 1 : 4 : 5 : 8 - tetraaminoanthraquinones, 1-amino-4-(p-aminophenyl)-amino-anthraquinone, 1 : 4 : 5-triamino-8-(p-aminophenyl)amino - anthraquinone and partially N-alkylated polyaminoanthraquinones.  Specified acylating anhydrides are those of phthalic 4-chlorophthalic, 3- or 4-nitrophthalic, succinic maleic and quinolinic acids.  In examples: (1) 1 : 4 : 5 : 8 - tetraaminoanthraquinone is N-mono-acylated with phthalic, chlorophthalic, nitrophthalic or quinolinic anhydride by heating in pyridine; (2) 1 : 4 : 5 : 8- or 1 : 4 : 5 : 6-tetraaminoanthraquinone or 1-hydroxy - 4 : 5 : 8 - triaminoanthraquinone is N-mono-acylated with maleic anhydride by heating in dimethylaniline; (3) 1-amino-4-(p-aminophenyl)amino-anthraquinone or 1 : 4 : 5-triamino - 8 - (p - aminophenyl)amino - anthraquinone is N-monoacylated with maleic anhydride by heating in nitrobenzene; (4) 1-hydroxy-4 : 5-diamino-8-methylamino-anthraquinone is N-mono-acylated with maleic anhydride by heating the reagents together, (5) 1-anilino-4 : 5 : 8-triaminoanthraquinone is N-monoacylated with succinic or maleic anhydride by heating the reagents together until the product is readily soluble in dilute alkali, (6) 1 : 5-diaminoanthraquinone is monoacylated with maleic anhydride in the presence of o-dichlorobenzene, (7) 1 : 4 - diaminoanthraquinone is N-monoacylated with maleic anhydride by heating in dimethylaniline.  An example is also given of the dyeing process for cellulose acetate artificial silk. Specifications 344,117, 353,932 and 355,657 are referred to. The Specification as open to inspection under Sect. 91 refers also to the use of the dyestuffs for dyeing and printing natural fibres and artificial fibres of regenerated cellulose or superpolyamides, and also for colouring artificial masses such as cellulose acetate lacquers.  This subject-matter does not appear in the Specification as accepted.
Patent GB-873812-A (GB)
Title: Improvements in or relating to inductor pressure transducers
IPC: G01L9/00
Filed: 1959-04-27
Abstract: 873,812. Measuring electrically. EPSTEIN, P. C., and SCHILD, R. March 15, 1960 [April 27, 1959], No. 14337/59. Class 40 (1). An inductive pressure transducer comprises an annular member 10 with a diaphragm 11 of ferromagnetic material extending across it, a pair of similar coil assemblies 13, located one each side of the diaphragm, and attached to end members 14 which are sealed to the annular member by 0 rings 17 and secured to an outer member 15 surrounding said annular member in such a way that the annular member is free to move radially, but not axially, within the outer member to allow for differential thermal expansion of the annular member relative to the outer member. The two coils may be connected in a standard bridge circuit the differential pressure being indicated by the out of balance of the bridge. Specification 823,323 is referred to.
Patent GB-298879-A (GB)
Title: Improved device for scraping or scouring floors
IPC: A47L13/282
Filed: 1928-05-16
Abstract: 298,879. Diener, A., and Luber, B. May 16, 1928. Floors, cleaning-A device for scraping and scouring floors comprises a plate a of sheet metal having projections b on the underside and formed by stamping prongs therefrom for engagement with steel shavings. The plate a is pointed towards the front and the edge is bent upwards to Deceive and hold a layer of felt. An adjustable band f fastened by snap buttons g serves to accommodate the hand of the user. In a modification, Fig. 3, bands f, f<2> are provided to accommodate the foot.
Patent GB-484851-A (GB)
Title: Improvements in educational appliances
IPC: G09B19/14
Filed: 1937-05-24
Abstract: 484,851. Teaching warfare. GARTHE, D., and GARTHE, P., (trading as GARTHE, P., [Firm of]). May 24, 1937, No. 14429. Convention date, Jan. 26. [Class 119] [Also in Group XV] In a demonstration or educational device, which may be used for instruction in the use of weapons, and in which objects used for illustration are held by inagnetism on a board of magnetizable material adapted to be written or drawn upon, three dimensional models, e.g. of vehicles or weapons, constructed to a smaller scale in height than in length and breath, are movably held on the surface of the board by permanent magnets arranged removably in their underside. The board comprises two thin sheet iron plates 10, 11, Fig. 3, flanged at the edges 12, 13, so as to fit over each other, and stiffened by internal wooden battens 14, 15. The surfaces of the board are painted so as to take chalk marks. The board may be pivotally mounted on a vertical or horizontal axis or hung on a wall. The models 16, Fig. 4, are of hollow papier mÔchÚ, cardboard or the like, provided with a cardboard bottom in which magnets m, Fig. 9, are removably held by friction. The magnets, of high quality flat steel, may be grooved at one side to form two polepieces, or, as shown, may carry on their short sides polepieces of soft iron. The polepieces may be arranged flat on the short sides of the magnet m and bent over to leave a small air gap, or may have U-shaped members 25 to engage the magnet, and inclined edges at the air gap to concentrate the lines of force.
Patent GB-110032-A (GB)
Title: Improvements in Mechanically-propelled Ploughs.
Inventor: WALLER FRANCIS MARK
IPC: A01B3/44
Filed: 1916-10-11
Abstract: 110,032. Waller, F. M. Oct. 11, 1916. Ploughs.-Consists of a one-way motor-plough in which a set of right-handed ploughs and a set of left-handed ploughs are mounted side by side at the rear end of the tractor frame. The sets of ploughs are attached to frames v, w, connected to 'the tractor frame at their front ends by any suitable flexible draft tackle, preferably that described in Specification 108,075, [Class 79 (iii), Motorvehicles, Arrangement &c. of parts of]. The frames v, w are raised and lowered alter nately by suitable tackle, preferably that described in Specification 14507/13, which is shown in the Figure and which causes the front share to leave the ground in advance of the rear share when the ploughs are being lifted and also causes the front share to enter the ground before the rear share when the ploughs are being lowered. A set of lifting tackle is provided for each plough and consists of a shaft with two cranks such as a<1> and a<2>, to which chains e, e<1> respectively are attached. The chain e' is connected directly to the front part of the frame v and the chain e passes over a pulley c and is then connected to the rear of the frame v. The pulley c of the one tackle and the corresponding pulley d of the other tackle are mounted! so as to slide on bars g and h respectively, and as one set of ploughs is being raised and the other lowered, the pullies are shifted so as to bring the lowered ploughs into the operative position while the ploughs being raised are swung to one side.
Patent GB-452708-A (GB)
Title: An improved process for treating marble surfaces
IPC: C04B41/52
Filed: 1936-05-22
Abstract: Marble surfaces are treated by cleaning, grinding, coating with a transparent cellulose lacquer, flatting down the coating when dry, applying a coating of a synthetic resin varnish, e.g. a varnish containing "Glyptal" (Registered Trade Mark) resin, and stoving, e.g. at a temperature of 100--150 DEG  F.  After stoving, the second coating may be flatted down with an abrasive, e.g. fine carborundum, and polished, e.g. with crocus powder or rouge.ALSO:Marble surfaces are treated by cleaning, grinding, coating with a transparent cellulose lacquer, flatting down the coating when dry, applying a coating of a synthetic resin varnish, e.g. a varnish containing "Glyptal" (Registered Trade Mark), and stoving, e.g. at a temperature of 100-150 DEG  F.  After stoving, the second coating may be flatted down with an abrasive such as fine carborundum and polished, e.g. with crocus powder or rouge.
Patent GB-930159-A (GB)
Title: Centrifugal separators
IPC: B04B1/18
Filed: 1961-04-21
Abstract: 930,159. Centrifugal separators. SEPARATOR A.B. April 21, 1961 [April 22, 1960], No. 14499/61. Class 23. In a centrifuge for a sludge-containing mixture of liquids, e.g. water extracts of coffee or citrus juice, the liner discs in the separation chamber 9 are divided into two disc sections 10 and 11 by one disc 12 having a greater diameter than the other discs, the section 10 acting as a clarifier and the section 11 acting as a purifier and having outlets 15 and 17 for light and heavy separated liquids respectively. Sludge discharge openings 4 in the wall of the rotor body 1 are controlled by an axially movable valve disc 5 held closed by being pressed against the rotor cover 2 by liquid supplied through a stationary pipe 20 to the chamber 23 between the valve and the rotor. Throughflow holes 13 are provided in all the liner discs. In operation, liquid mixture to be treated is fed through the hollow spindle 7 to the chamber 9 where the sludge is separated out and forms a cushion 26 at the periphery of the chamber 9 and prevents heavy liquid passing round the outer edge of disc 12. Separated light liquid is discharged to the chamber 14 and the heavy liquid together with unseparated light liquid passes through holes 13 to the space above the disc where final separation occurs, the light liquid passing to chamber 14 and being discharged through the outlet 15 and the heavy liquid being discharge through channel 16 and the outlet 17. The reference numerals 12a and 12b indicate possible alternative positions of the disc 12. To discharge the sludge the supply of liquid mixture and the supply of liquid to chamber 23 is cut off without stopping the centrifuge. The liquid in chamber 23 then escapes through hole 24 and the valve 5 is pressed downwards by the content in the centrifuge which is then discharged through the openings 4. In a modification, Fig. 2 (not shown), the centrifuge has open outlets and holes 13 are not provided in the disc 12 but in a disc immediately above and connected to the disc 12 and having a lesser internal diameter than the other discs.
Patent GB-311382-A (GB)
Title: Improvements in or relating to the manufacture of spinal anaesthetic solutions
IPC: A61K47/42
Filed: 1929-05-09
Abstract: 311,382. Metz Laboratories, Inc., H. A., (Assignees of Pitkin, G. P., and Hooper, C. W.). May 10, 1928, [Convention date]. Grant of Patent refused. Medicines for internal use.-Spinal anaesthetic solutions which will not mix with the spinal fluid until the anaesthetic has been absorbed are obtained by the incorporation therein of a glue-like, adhesive of vegetable origin, such as gliadin or like alcohol-soluble cereal protein. Anaesthetic specified are p. amino-benzoyl-diethyl-amino-ethanol and its hydrochloride, the hydrochloride of diethyl-aminopropyl-cinnamate, and the hydrochloride of pamino-benzoyl-dimethyl-amino-methyl isobutanol. Suitable solutions in distilled water contain 5 to 10 per cent of the anaesthetic, 0.03 to 0.06 per cent of gliadin, 10 to 16 per cent ethyl alcohol. The gliadin may be replaced, either wholly or in part, by a mucilage prepared by prolonged boiling of wheat flour suspended in a gauze bag in water and taking the clear supernatant mucilaginous liquid. When such mucilage wholly replaces the gliadin, alcohol may be omitted from the anaesthetic solution. The solutions are sealed in ampoules and sterilized by repeated brief immersion in boiling water or by a single treatment in an autoclave.
Patent GB-427508-A (GB)
Title: Improvements in and relating to carrier wave signalling systems
IPC: H03C1/62
Filed: 1934-05-15
Abstract: 427,508. Wireless transmitting systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. May 15, 1934, No. 14661. Convention date, May 19, 1933. [Class 40 (v)] Relates to modulating systems of the kind in which the mean carrier intensity varies with the signal volume, and consists in separately rectifying the lower-frequency and the higher-frequency components of the signal to obtain the bias for regulating the carrier wave amplifier ; and in providing means for maintaining that bias constant when signals exceed a predetermined volume. The carrier wave from a source 1 is applied through an amplifier 2 to the input circuit of a push-pull amplifier 3 from which it passes to a load circuit 4. The signal from a microphone 18 passes through an amplifier 19 to a valve 20 which by means of a choke 21 in its plate circuit modulates the output of the valve 2. The bias on the grids of the valve pair 3 is supplied through a line 15 from a battery 13 and a resistance 16. Signal voltage from the amplifier 20 is again amplified by the valve 20<1> and its higherfrequency components are passed through a condenser 25 to a full-wave rectifier 27 the output from which is smoothed and passed through the resistance 16. The lowerfrequency signal components pass through an inductance 30 to a frequency-doubling valve pair 32, which feeds a full-wave rectifier 36, and the resulting direct current is smoothed and passes through the same resistance 16. When no signal is present, the bias provided by the battery 13 as indicated by the line 42, Fig. 3, is such that the valves 3 either just fail to pass any plate current, or pass a carrier of low steady amplitude indicated by the line 50. When signals are present, the bias is reduced to an extent dependent on the envelope 52 of the signal current 43 as shown at 45. The effect is that the troughs of the modulated wave all fall to the zero line, or to the line 50. When signals exceed a certain peak valve, the circuit may be arranged so that no further reduction of grid bias is effected as indicated at 53, and this results in the carrier wave falling below the level 50 as shown at 58. This limitation is produced by connecting a discharge tube 49 between the bias lead 15 and a point on the battery 13, which tube becomes conductive when the signal amplitude reaches the predetermined peak valve.
Patent GB-822885-A (GB)
Title: Adhesive tapes
IPC: C09J7/20
Filed: 1955-08-12
Abstract: 822,885. Reinforced pressure-sensitive adhesive tape. SMITH, J. J. Aug. 12, 1955 [Aug. 13, 1954 (2)], No. 14671/59. Divided out of 822,884. Addition to 680,657. Class 140. An adhesive tape comprises a coating 16, Fig. 2, of pressure-sensitive adhesive on one surface of a flexible backing 14 having longitudinal reinforcing strands 18 which are embedded in a coating 20 of yieldable bonding material on the other surface of the backing. The strands are each capable of slight independent longitudinal movement to distribute tensile forces applied to the tape. A release coating may be applied to the bonding coating. The strands and backing may be of contrasting colour. The strands may be secured to the backing by a relatively thin bonding coat so as to protrude out of the coat, Fig. 3, not shown. The backing may be of specified cellulose esters and ethers, polymers and copolymers of polyvinylidene chloride or of vinyl chloride, polyethylene, polyfluoroethylenes, polyvinyl alcohol, superpolyamides, polystyrenes, regenerated cellulose, gelatin, flexible glass, acrylates, methacrylates, rubber and its derivatives, starch, urea aldehyde, polyvinyl acetal or butyral and metal foils. Alternatively they may be woven or non-woven fibrous backings such as of exemplified synthetic or natural fibres or mineral fibres. The preferred strands are of glass, e.g. of glass yarn but synthetic filaments or natural threads, as exemplified, or wire may be used. The bonding coat is a different material from the backing and is preferably based on a rubber or elastomer, examples being given. Examples of adhesive coatings are also given. Specification 689,667 also is referred to.
Patent GB-1377697-A (GB)
Title: Disazo dyestuffs their preparation and use in photographic materials
IPC: C09B43/08
Filed: 1972-03-29
Abstract: 1377697 Carboxylic halides and intermediates therefor CIBA-GEIGY AG 29 March 1972 [14 May 1971] 14741/72 Heading C2C [Also in Divisions C4 and G2] 1 - (4<SP>1</SP> - Chloroformyl - benzamido) - 2 - chloro- 5-chloroformyl-benzene is prepared by condensing 3-amino-4-chlorobenzoic acid methyl ester with p-toluoylchloride to give 1-(4<SP>1</SP>-methylbenzamido) - 2 - chloro - 5 - methoxy carbonylbenzene which is hydrolysed with aq. NaOH to give 1 - (4<SP>1</SP> - methyl - benzamido) - 2 - chloro - 5- carboxy-benzene which is oxidized with KMnO 4  to give 1 - (4<SP>1</SP> - carboxy - benzamido) - 2 - chloro- 5 - carboxy - benzene which is finally treated with thionyl chloride. N - (3<SP>1</SP> - chloroformyl - phenyl) - 4 - chloroformylphthalimide is prepared by condensing trimellitic anhydride with 3-amino-benzoic acid to give N - (3<SP>1</SP> - carboxy - phenyl) - 4 - carboxyphthalimide and treating this with PCl 5 . 1,2 - Bis - (4 - chloroformyl - phenoxy)- ethane is prepared by condensing 4-hydroxybenzoic acid methyl ester with ethylene bromide to give 1,2 - bis - (4 - methoxycarbonyl - phenoxy)-ethane which is hydrolysed with aq. KOH to give 1,2 - bis - (4 - carboxy - phenoxy)- ethane which is treated with thionyl chloride. 1,3 - Bis - (4 - chloroformyl - phenylcarbonyl)- benzene is prepared by oxidizing 1,3-bis-(4- methyl-phenylcarbonyl)-benzene with KMnO 4  to give 1,3 - bis - (4 - carboxyphenyl - carbonyl)- benzene and treating this with PCl 5 . 1,2 - Bis - (4 - chloroformyl - benzamido)- ethane is prepared by condensing terephthalic acid monomethyl ester-monochloride with ethylene diamine to give 1,2-bis-(4-methoxycarbonylbenzamido)-ethane which is hydrolysed with aq. NaOH to give 1,2-bis-(4-carboxy-benzamido)- ethane and treating this with thionyl chloride. Further dichloroformyl compounds are listed in Table 1.
Patent GB-1005931-A (GB)
Title: Safety fence for roadways
IPC: E01F15/06
Filed: 1964-04-09
Abstract: 1,005,931. Crash barriers; posts. H. BERTRAM. April 9, 1964 [Sept. 13, 1963], No. 14793/64. Headings E1B and E1G. A roadway crash barrier comprises tubular posts 20 secured by frangible shear pins 22 to ground embedded sleeves 21, the posts supporting a plurality of longitudinal wires, such that on impact by a vehicle the posts shear successively at their base connections to reduce the transverse vehicle forces and guide the vehicle in the direction of the barrier. The pins 22 have spigots for engagement with the posts and sleeves and a central flange to rest on the upper end of the sleeve, a reduction in diameter of the pin above the flange provides for fracture at a predetermined stress. The pins are preferably of cast iron, and the wires support wire mesh to provide a cushion effect.
Patent GB-593625-A (GB)
Title: Improvements in and relating to moulded fibre products
IPC: D21J3/00
Filed: 1945-06-12
Abstract: Moulded fibrous products, e.g., porous, thick-walled articles for electrical, acoustic, or thermal insulation, are made from a suspension containing cellulosic fibres which have been made water-repellent by treatment with an organohalogenosilane, e.g., methylchlorosilane of 1 to 3 methyl groups per silicon atom. Examples specify a mixture of dimethyldichloro- and methyltrichlorosilane, and a mixture of glass fibres and kraft fibres, deposited under 27 ins. (mercury) vacuum, on a perforated form.  Azeotropic mixtures of silicon halides as disclosed in Specification 575,696, [Group VIII], may be used, and the fibres may be treated in sheet form or disintegrated.  The pulp, which may include asbestos fibres, glass fibres 0.05 ins. long, and resinous materials, is beaten, formed, and dried as by pressing and passing hot gas through the material.  The products may be impregnated with up to 60 per cent. of phenolic, alkyd, or organopolysiloxane resins or with mineral or vegetable oils &c. Specifications 547,606 and 572,740 also are referred to.
Patent GB-129863-A (GB)
Title: Improvements in Draught Induction Apparatus.
Inventor: PLUMB FRANK ERNEST
IPC: F23L5/04
Filed: 1918-09-12
Abstract: 129,863. Plumb, F. E., and Trevor, R. E. B. Sept. 12, 1918. Blast and aspirating apparatus injector. - Draught-induction apparatus for furnaces, drying-chambers, ventilation, and the like, of the type in which an annular nozzle is mounted axially in a delivery tube so as to induce air both through a hollow core and through the space surrounding the nozzle, is constructed with a special nozzle which delivers a jet of steam or compressed air into direct contact with the walls of an inwardly-tapering delivery tube. The outwardly-tapering annular nozzle is formed by a valve 4 co-operating with a seating 5 screwed into the bracket 2. The valve stem is hollow and is screwed into the seating so that the orifice can be adjusted by rotating the stem. A lock-nut 7 secures the stem in the adjusted po.sition. The motive fluid entering by the pipe 8 passes to the orifice by circumferential ports 9, and is delivered as an outwardly-tapering conical jet into direct contact with the walls of the inwardly-tapering delivery tube 13. Several of the appliances may be arranged in parallel in conjunction with a common motive fluid supply-pipe.
Patent GB-637778-A (GB)
Title: Improvements in or relating to fluid transmission gears
IPC: F04C2/10
Filed: 1948-06-03
Abstract: 637,778. Rotary engines or pumps. SIEBE, GORMAN & CO., Ltd., and BEST, W. G. June 3, 1948, No. 15042. [Class 110(ii)] A rotor 10 on a shaft 8 carries ring teeth 11 which mesh with three or more pinions 13 which rotate on stub shafts 14 carried by fixed end cheeks 6 supporting radial partitions 15. For a pump, circumferentially-arranged inlet and outlet passages 2, 3 communicate with main inlet and outlet ports 4, 5 respectively. Fluid passes through inlets 12 and is carried between pairs of ring teeth or by the pinions to the outlets 3. For a motor, working fluid under pressure enters through the port 4 and is exhausted through the port 3.
Patent GB-115366-A (GB)
Title: Improvements relating to Loose Leaf Binders.
IPC: B42F13/04
Filed: 1917-10-17
Abstract: 115,366. Impey, F. L., and Morland & Impey. Oct. 17, 1917. Flexible-band files.-The flexible thongs d of a loose-leaf binder are covered by metal strips a, corrugated lengthwise or otherwise stiffened, one end c of each strip being attached directly to a cover c, the other end b being bent'to engage the hinge-carrying cross-bar f. The strips a, prevent buckling of the thongs during manipulation of the binder mechanism.